Download GTU BE/B.Tech 2019 Winter 3rd Sem New 2131904 Material Science And Metallurgy Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem New 2131904 Material Science And Metallurgy Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 2131904 Date: 30/11/2019

Subject Name: Material Science and Metallurgy
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.



MARKS

Q.1 (a) Explain in brief Materials Science & Metallurgy. 03
(b) Explain in brief important of dislocations. 04
(c) Determine atomic packing factor for BCC crystal structure with
sketch.
07

Q.2 (a) Explain the Twin boundaries by suitable sketches. 03
(b) Explain in brief ?Total Energy of Nucleation?. 04
(c) Draw & Explain Iron-Iron Carbide Diagram with all regions. 07
OR
(c) Explain the Hume Rothery?s Rules with different Factors. 07
Q.3 (a) State & Explain the Gibbs Phase Rule with suitable Example. 03
(b) What is Solidification? Explain various defects of Solidification. 04
(c) Explain in Detail Ultrasonic testing Method with sketch and
advantages, disadvantages & applications.
07
OR
Q.3 (a) Write short note on annealing process. 03
(b) What are the factors that decide the types of cast irons? 04
(c) Explain the process of specimen preparation with different steps. 07
Q.4 (a) Explain in Brief ?Application of Diffusion?. 03
(b) Explain the Formation of Nuclei & Grain Structure. 04
(c) List out the difference between Austempering Process &
Martempering Process.
07

OR
Q.4 (a) State critical reactions of Iron-carbon phase Diagram. 03
(b) Write the basic steps for powder metallurgy method. 04
(c) Write a Brief short notes on Bearing Steel, Spring steel & H. S. S. 07
Q.5 (a) State & Explain Lever Rule for phase diagram 03
(b) Explain the construction of Metallurgical Microscope with sketch. 04
(c) Write short notes on Nickel And Its Alloys. 07
OR

Q.5 (a) Write short note on Gray Cast Iron. 03
(b) Explain the Induction Hardening process with diagram. 04
(c) Explain Radiography Testing method with neat sketch. Also explain
limitations and applications
07

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